package com.qf.filter;


import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

//输入输出格式过滤
@WebFilter("/*")
public class FormatFilter implements Filter {
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletRequest request=(HttpServletRequest)  servletRequest;
        HttpServletResponse response=(HttpServletResponse) servletResponse;

        //放行前转换编码格式
        request.setCharacterEncoding("utf-8");
        response.setContentType("text/html;charset=utf-8");
        //放行
        filterChain.doFilter(request,response);
    }

    @Override
    public void destroy() {

    }
}
